SEE ALSO: Lee Jong Suk shows his caring side for child actress Kim Ji Young on the set of 'Doctor Stranger'

The actor was spotted monitoring himself through the camcorder in the behind-the-scene photos above. Even during breaks, he was diligent enough to look back on his scenes while still dressed in his white coat, showing his perfectionism and the hard work put into every second of the drama.

The drama's production company rep stated, "We are used to seeing Lee Jong Suk focusing on monitoring himself while holding a camcorder on set. Even if we don't say anything, he is an actor who knows how to reflect on his acting, so our anticipation for him is high... Not only Lee Jong Suk but all of the actors are filming with a lot of passion, so we ask that you look forward to and show interest in the drama."

What are your thoughts on 'Doctor Stranger' so far?